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From "Kenneth Knowles (JIRA)" <>
Subject [jira] [Created] (BEAM-1736) @DefaultCoder annotation should work with Create
Date Thu, 16 Mar 2017 20:56:41 GMT
Kenneth Knowles created BEAM-1736:

             Summary: @DefaultCoder annotation should work with Create
                 Key: BEAM-1736
             Project: Beam
          Issue Type: Bug
          Components: sdk-java-core
            Reporter: Kenneth Knowles
            Assignee: Kenneth Knowles


"My class is declared as follows:

@DefaultCoder(SerializableCoder.class) public class Data<DataT extends BaseData> implements
Serializable {

and it fails like this:

Caused by: org.apache.beam.sdk.coders.CannotProvideCoderException: Cannot provide coder based
on value with class my.project.Data: No CoderFactory has been registered for the class."

It seems like this should work, though Create's value-based coder inference has more limitations
and safety issues than usual coder inference. To investigate.

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